Sheet-metal radiator.



T. E. MURRAY.

SHEET METAL RADIATOR.

APPLICATION- FILED IUNE 17, I916.

Patented Oct. 30, 191

nua nfoz JZWJ a: My @351 fir alike M4213 THOMAS E. MURRAY, OF NEW YORK, N. Y.

\ SHEET-METAL RADIATOR.

Specification of Letters Patent.

Patented Got. 3% 1917?.

Application filed June 17,1916. Serial No. 104,172.

To all whom it may concern:

Be it known that l, THOMAS E. Mpnnar, av citizen of the United States, res1d1ng at New York, in the county of New York and State of New York, have invented a certain new and useful Improvement in fijaheet- Metal Radiators, of which the following is a specification.

The invention is a radiator formed of sheet metal, preferably steel, with its parts electrically welded together. The construct on comprises a body or middle portion having parallel opposite walls, in which are made, by striking up the metal of said walls, 1nternal elongated project1ons.the pro ections of one wall being electrically welded to r the projections of the opposite wall to form internal ducts for fluid circulation. Y The ends of said middle portion extend beyond the ends of said ducts so as to form chambers in, said middle portion, with which chambers said ducts communicate. Caps of cup-shaped form register at their edges with the end edges of said chambers and are electrically butt-welded thereto. On opposite sides of said caps are flanges surrounding openings in said caps.

In the accompanying drawmgs- Figure 1 is a front elevation of a multiple radiator formed of a pluralityof my radiators united as sections. Fig. 2 is an elevation of one of my radiators. Fig. 3-is a section on the line w, a: of Fig. 2. Fig. 4 is a section of the lower end portion of my radiator on the line y, y ofFig. 2.

Similar letters of reference indicate like parts. I

My radiator, as here illustrated, comprises a closed casing of sheet metal made in three partsnamely, a middle portion A and two end portions B, C. The portion A has opposite parallel walls, and may be formed by folding over the sheet and uniting its meeting edges at D by electric welding. In said opposite walls are made, by stamping or striking up, a number of inward projections E, and the projections on one wall are welded to the projections of the opposite wall, so that circulating ducts or passages F for to fluid are thus formed within said middle portion. The projections E do not reach to the upper and lower edges of the middle portion A, so that chambers G, H are formed in the ends of said middle portion. With said edges register and to said edges are buttwelded the edges of the cup-shaped caps B and C. On opposite sides of cap B are integral flanges l, and on opposite sides of cap C are integral flanges Lsaid flanges surrounding openings in said caps. When a multiple radiator of several sections is assembled, as shown in Fig. 1, the flanges between the caps are butt-welded together. The outer flanges of the end sections may be covered by suitable caps K, which may be welded in place. Welded to the outer flange of an end section is .a short tube M which is turned downwardly, and may be threaded to receive the usual valve connection. The outer flange of the other end section may be closed by a welded cap N.

I claim:

.1. A radiator of sheet metal, comprising a body portion having in its opposite walls parallel registering projections electrically welded together to form ducts, the ends of sald body portion extending beyond the ends of said projections, and cup-shaped caps registering at their edges with the end edges of said body portion and electrically butt- 1 welded thereto.

2. Aradiator of sheet metal, comprising ,a body portion formed of a single sheet of- 3. A radiator of sheet metal, comprising a plurality of parallel sections, each section comprising a body portion having in its opposite walls parallel registering projections electrically welded together to form ducts, the ends of said body portion extending beyond the ends of said projections, cupshaped caps registering at their edges with in testimony whm'ecf 'i' have affixed my the end edges 0f said body portlon and elecslgnature m presence 01? W0 wltnesse e 214 on 1,1 wally but Welded t1 rate, and f1 n e; l HQMAS E A? epposlte sldes of send caps surroundmg opemngs 1x1 sald caps; the flanges 0f ad acent Witnesses:

sectmns 122mg e'ientncaily butt-weldad bcmm? T. Foam,

gethez, MAY MGGARBY. 

